From A Wiki of Ice and Fire
Dragonmount vs. Dragonmont
According to the book's appendix listing the translations for the German issue the mountain is named "Dragonmont", not "Dragonmount". I changed two occurrances accordingly; a third occurrance in the text already was spelled "Dragonmont" (I left that unchanged of course).
If a better source states different, feel free to change it back to "Dragonmount" (all three occurrances then, please) and name the source here.